Fern Roof (Kathrin Marks) Imagine that you’re a spore nestled on a leaf in a sleepy forest. It’s a dry, sunny day. All of a sudden – within 0.00001 seconds, you are flung into the air with an acceleration of 100,000 times the force of gravity. What happened?

Photo source. “There’s an African saying: When the elephants fight, the grass suffers.” Dartmouth College President Jim Yong Kim on the greatest challenge in global health, in a recent interview with Charlie Rose, pointing out that the “poorest of poor suffer the most.”